At Warhammer World you can buy an Exclusive Space Marine HQ Command set of a Land Raider Excelsior and a Rhino Primaris. This is the Rhino Primaris.
The Rhino Primaris is a specialised variant of the standard Adeptus Astartes Rhino Armoured Personnel Carrier (APC) that serves a battlefield support and command and control function. As a designated command vehicle, it possesses an unusually powerful array of Augur sensor arrays, Cogitators and advanced communications gear to carry out ship-to-surface coordination of a planetary assault.
It often acts in concert with the Land Raider Excelsior, a variant of the standard Land Raider also intended to carry out command and control functions, to help target orbital bombardments from a Space Marine fleet in high orbit of the embattled world.